20152155042 has 48 divisors (see below), whose sum is σ = 47132504640. Its totient is φ = 6203758176.

The previous prime is 20152155031. The next prime is 20152155047. The reversal of 20152155042 is 24055125102.

20152155042 is a `hidden beast` number, since 2 + 0 + 152 + 1 + 5 + 504 + 2 = 666.

It is a super-2 number, since 2×20152155042² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20152154997 and 20152155015.

It is not an unprimeable number, because it can be changed into a prime (20152155047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 827248 + ... + 851259.

It is an arithmetic number, because the mean of its divisors is an integer number (981927180).

Almost surely, 2^20152155042 is an apocalyptic number.

20152155042 is an abundant number, since it is smaller than the sum of its proper divisors (26980349598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20152155042 is a wasteful number, since it uses less digits than its factorization.

20152155042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678567 (or 1678564 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 20152155042 in words is "twenty billion, one hundred fifty-two million, one hundred fifty-five thousand, forty-two".